Java Code Examples for org.eclipse.xtext.util.ITextRegionWithLineInformation#getOffset()

@Override
protected IssueLocation getLocationForNode(INode node) {
	ITextRegionWithLineInformation nodeRegion = node.getTextRegionWithLineInformation();
	N4JSIssueLocation result = new N4JSIssueLocation();
	result.offset = nodeRegion.getOffset();
	result.length = nodeRegion.getLength();

	LineAndColumn lineAndColumnStart = NodeModelUtils.getLineAndColumn(node, result.offset);
	result.lineNumber = lineAndColumnStart.getLine();
	result.column = lineAndColumnStart.getColumn();

	LineAndColumn lineAndColumnEnd = NodeModelUtils.getLineAndColumn(node, result.offset + result.length);
	result.lineNumberEnd = lineAndColumnEnd.getLine();
	result.columnEnd = lineAndColumnEnd.getColumn();
	return result;
}
 

protected ILocationData toLocationData(List<INode> nodes) {
	ITextRegionWithLineInformation result = ITextRegionWithLineInformation.EMPTY_REGION;
	for (INode node : nodes) {
		if (!isHidden(node)) {
			ITextRegionWithLineInformation region = node.getTextRegionWithLineInformation();
			if (region.getLength() != 0) {
				result = result.merge(new TextRegionWithLineInformation(region.getOffset(), region.getLength(), region.getLineNumber() - 1, region.getEndLineNumber() - 1));
			}
		}
	}
	if (result.getLength() == 0)
		return null;
	return new LocationData(result.getOffset(), result.getLength(), result.getLineNumber(),
			result.getEndLineNumber(), null);
}
 

/**
 * Returns the merged location of all associated locations if they belong to the same resource. Otherwise
 * <code>null</code> is returned.
 */
public ILocationData getMergedAssociatedLocation() {
	List<ILocationData> allData = getAssociatedLocations();
	if (allData.isEmpty()) {
		return null;
	}
	if (allData.size() == 1) {
		return allData.get(0);
	}
	boolean allNull = true;
	SourceRelativeURI path = null;
	ITextRegionWithLineInformation region = ITextRegionWithLineInformation.EMPTY_REGION;
	for (ILocationData data : allData) {
		if (path != null) {
			if (!path.equals(data.getSrcRelativePath())) {
				return null;
			}
		} else {
			if (data.getSrcRelativePath() == null) {
				if (!allNull)
					throw new IllegalStateException(
							"Iff multiple associated locations are present, the path has to be set");
			} else {
				allNull = false;
				path = data.getSrcRelativePath();
			}
		}
		region = region.merge(new TextRegionWithLineInformation(data.getOffset(), data.getLength(),
				data.getLineNumber(), data.getEndLineNumber()));
	}
	return new LocationData(region.getOffset(), region.getLength(), region.getLineNumber(),
			region.getEndLineNumber(), path);
}
 

/**
 * Computes {@link IssueLocation} for the given node.
 */
protected IssueLocation getLocationForNode(INode node) {
	ITextRegionWithLineInformation nodeRegion = node.getTextRegionWithLineInformation();
	int offset = nodeRegion.getOffset();
	int length = nodeRegion.getLength();
	return getLocationForNode(node, offset, length);
}
 

protected String getText(EObject obj, ITextRegionWithLineInformation textRegion) {
	if (obj == null || textRegion == ITextRegionWithLineInformation.EMPTY_REGION) {
		return "";
	}
	ICompositeNode node = NodeModelUtils.getNode(EcoreUtil.getRootContainer(obj));
	if (node == null) {
		return "";
	}
	int endOffset = textRegion.getOffset() + textRegion.getLength();
	return node.getRootNode().getText().substring(textRegion.getOffset(), endOffset);
}
 

@Override
protected ILocationInEclipseResource createLocationInResource(ITextRegionWithLineInformation region, SourceRelativeURI srcRelativePath) {
	return new LocationInEclipseResource(region.getOffset(), region.getLength(), region.getLineNumber(), region.getEndLineNumber(), srcRelativePath, this);
}
 

@Override
public ITextRegion getSignificantTextRegion(EObject element) {
	if (element instanceof RichStringLiteral) {
		ICompositeNode elementNode = findNodeFor(element);
		if (elementNode == null) {
			return ITextRegion.EMPTY_REGION;
		}
		ITextRegion result = ITextRegion.EMPTY_REGION;
		for (INode node : elementNode.getLeafNodes()) {
			if (isHidden(node)) {
				continue;
			}
			EObject grammarElement = node.getGrammarElement();
			if (!(grammarElement instanceof RuleCall)) {
				continue;
			}
			RuleCall ruleCall = (RuleCall) grammarElement;
			
			ITextRegionWithLineInformation region = node.getTextRegionWithLineInformation();
			int offset = region.getOffset();
			int length = region.getLength();
			if (grammarAccess.getRICH_TEXTRule() == ruleCall.getRule()) {
				offset += 3;
				length -= 6;
			} else if (grammarAccess.getRICH_TEXT_STARTRule() == ruleCall.getRule()) {
				offset += 3;
				length -= 4;
			} else if (grammarAccess.getRICH_TEXT_ENDRule() == ruleCall.getRule()) {
				offset += 1;
				length -= 4;
			} else if (grammarAccess.getRICH_TEXT_INBETWEENRule() == ruleCall.getRule()) {
				offset += 1;
				length -= 2;
			} else if (grammarAccess.getCOMMENT_RICH_TEXT_ENDRule() == ruleCall.getRule()) {
				offset += 2;
				length -= 5;
			} else if (grammarAccess.getCOMMENT_RICH_TEXT_INBETWEENRule() == ruleCall.getRule()) {
				offset += 2;
				length -= 3;
			} else {
				continue;
			}
			result = result.merge(toZeroBasedRegion(new TextRegionWithLineInformation(offset, length, region.getLineNumber(), region.getEndLineNumber())));
		}
		return result;
	}
	return super.getSignificantTextRegion(element);
}
 

public LocationData(ITextRegionWithLineInformation region, SourceRelativeURI path) {
	this(region.getOffset(), region.getLength(), region.getLineNumber(), region.getEndLineNumber(), path);
}
 

protected ILocationInResource createLocationInResource(ITextRegionWithLineInformation region, SourceRelativeURI srcRelativePath) {
	return new LocationInResource(region.getOffset(), region.getLength(), region.getLineNumber(), region.getEndLineNumber(), srcRelativePath, this);
}
 

/**
 * @since 2.5
 */
protected TextRegionWithLineInformation toZeroBasedRegion(ITextRegionWithLineInformation region) {
	return new TextRegionWithLineInformation(region.getOffset(), region.getLength(), region.getLineNumber() - 1, region.getEndLineNumber() - 1);
}